[PATCH 10/10] ARM: ux500: Enable PL022 SSP Controller in Device Tree

[Lee Jones]

This SSP Controller supports a number of serial communication methods.

Namely:

/**
 * enum ssp_interface - interfaces allowed for this SSP Controller
 * @SSP_INTERFACE_MOTOROLA_SPI: Motorola Interface
 * @SSP_INTERFACE_TI_SYNC_SERIAL: Texas Instrument Synchronous Serial
 * interface
 * @SSP_INTERFACE_NATIONAL_MICROWIRE: National Semiconductor Microwire
 * interface
 * @SSP_INTERFACE_UNIDIRECTIONAL: Unidirectional interface (STn8810
 * &STn8815 only)
 */

... and as such cannot be registered using of_register_spi_devices.
Instead it can be registered simply as a primecell device.

Signed-off-by: Lee Jones <lee.jones at linaro.org>
---
 arch/arm/boot/dts/db8500.dtsi      |    5 ++++-
 arch/arm/mach-ux500/board-mop500.c |    6 +++---
 2 files changed, 7 insertions(+), 4 deletions(-)

diff --git a/arch/arm/boot/dts/db8500.dtsi b/arch/arm/boot/dts/db8500.dtsi
index 6ae7f69..a9866a3 100644
--- a/arch/arm/boot/dts/db8500.dtsi
+++ b/arch/arm/boot/dts/db8500.dtsi
@@ -206,11 +206,14 @@
 		ssp at 80002000 {
 			compatible = "arm,pl022", "arm,primecell";
 			reg = <80002000 0x1000>;
-			interrupts = <14>;
+			interrupts = <0 14 4>;
 			#address-cells = <1>;
 			#size-cells = <0>;
 			status = "disabled";
+
+			// Add one of these for each child device
 			cs-gpios = <&gpio0 31 &gpio4 14 &gpio4 16 &gpio6 22 &gpio7 0>;
+
 		};
 
 		uart at 80120000 {
diff --git a/arch/arm/mach-ux500/board-mop500.c b/arch/arm/mach-ux500/board-mop500.c
index ea0242a..d0799d5 100644
--- a/arch/arm/mach-ux500/board-mop500.c
+++ b/arch/arm/mach-ux500/board-mop500.c
@@ -443,7 +443,7 @@ static struct stedma40_chan_cfg ssp0_dma_cfg_tx = {
 };
 #endif
 
-static struct pl022_ssp_controller ssp0_platform_data = {
+static struct pl022_ssp_controller ssp0_plat = {
 	.bus_id = 0,
 #ifdef CONFIG_STE_DMA40
 	.enable_dma = 1,
@@ -461,7 +461,7 @@ static struct pl022_ssp_controller ssp0_platform_data = {
 
 static void __init mop500_spi_init(struct device *parent)
 {
-	db8500_add_ssp0(parent, &ssp0_platform_data);
+	db8500_add_ssp0(parent, &ssp0_plat);
 }
 
 #ifdef CONFIG_STE_DMA40
@@ -749,6 +749,7 @@ struct of_dev_auxdata u8500_auxdata_lookup[] __initdata = {
 	OF_DEV_AUXDATA("arm,pl011", 0x80120000, "uart0", &uart0_plat),
 	OF_DEV_AUXDATA("arm,pl011", 0x80121000, "uart1", &uart1_plat),
 	OF_DEV_AUXDATA("arm,pl011", 0x80007000, "uart2", &uart2_plat),
+	OF_DEV_AUXDATA("arm,pl022", 0x80002000, "ssp0",  &ssp0_plat),
 	{},
 };
 
@@ -804,7 +805,6 @@ static void __init u8500_init_machine(void)
 		hrefv60_sdi_init(parent);
 	}
 	mop500_i2c_init(parent);
-	mop500_spi_init(parent);
 
 	i2c_register_board_info(0, mop500_i2c0_devices, i2c0_devs);
 	i2c_register_board_info(2, mop500_i2c2_devices,
-- 
1.7.5.4